1.8 WEB SEARCH ENGINES

The World Wide Web is a huge repository of distributed information, but can be searched as if the information is present in a single repository. A web search engine is used to search for information based on keywords entered by the user. Google, Yahoo! and Bing are the most popular search engines today and need no introduction about the way they is used and the way results are presented.

What is interesting about search engines is the algorithms that were developed, which contributed to shaping up the state of the web. Google’s page ranking algorithm was the first of the lot which became widely used. It was effective as it ranked the results according to the number of links it had, because popular pages had more links than ...

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